Washington County, Kansas Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates · 62nd-largest in Kansas
The population of Washington County, Kansas is 5,519 as of the 2023 American Community Survey, making it the 62nd-largest county in Kansas. The median household income is $62,452, the median home value is $106,100, and the median age is 43.9.
The population of Washington County has declined 3.7% since 2010 (5,785 → 5,572), a -0.27% annualized rate.
5,519
Population
-0.27%
Annual growth
6
People / sq mi
$62,452
Median Income
$106,100
Median Home Value
Washington County covers 895 sq mi of land at 6.2 people per square mile.
About Washington County, KS
In Washington County, home values do the distinguishing — a median of $106,100. Washington County is a county in Kansas with a population of 5,519.
Median household income is $62,452, below the US median of $78,538. Poverty is relatively low for US counties at 5.4%, below the national 12.4%. Housing is relatively affordable, with a median home value of $106,100, with typical rent around $547.
Degree attainment is mid-range for US counties: 23.3% of adults hold a four-year degree, below the national 35.0%. Remote work is below the national 14.0% at 7.4%, and the average commute runs about 21 minutes each way.
Washington County Population History (2010-2024)
The county of Washington County had a population of 5,785 in 2010 and 5,572 in 2024, a -3.7% growth over 14 years. The peak was 5,820 in 2011. Average annual growth rate: -0.26%.
5,572
Population (2024)
5,785
Population (2010)
5,820
Peak (2011)
-0.26%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 5,785 |
| 2011 | 5,820 |
| 2012 | 5,727 |
| 2013 | 5,626 |
| 2014 | 5,610 |
| 2015 | 5,568 |
| 2016 | 5,561 |
| 2017 | 5,475 |
| 2018 | 5,457 |
| 2019 | 5,449 |
| 2020 | 5,526 |
| 2021 | 5,521 |
| 2022 | 5,495 |
| 2023 | 5,553 |
| 2024 | 5,572 |
Race & Ethnicity
| White | 92.9% |
| Black or African American | 0.2% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 0.5% |
| Two or More Races | 0.0% |
Age & Sex
43.9
Median Age
48.2%
Female
51.8%
Male
23.4%
Age 65+
Age Distribution
Children (under 15): 19.5% · Seniors (65+): 23.4%
Income & Poverty
| Median household income | $62,452$-10,187 vs state |
| Mean household income | $79,440 |
| Per-capita income | $34,654 |
| Poverty rate | 5.4%-2.3% vs state |
| Unemployment rate | 0.9% |
| Employment-to-population | 58.9% |
Top Industries by Employment
The largest employment sector in Washington County is professional & business services, accounting for 24.4% of workers.
How residents commute
0.0%
Drive alone
4.2%
Carpool
79.4%
Public transit
7.4%
Work from home
20.5 min
Avg commute
Housing
$106,100$-97,300 vs state
Median home value
$547
Median rent
78.1%
Homeownership rate
2,731
Total housing units
86.8%
Occupied
13.2%
Vacant
21.9%
Renter-occupied
Social & access
94.8%
With health insurance
86.6%
With broadband internet
24.8%
Foreign-born
9.2%
Veterans (18+)
13.9%
With a disability
94.6%
Speak language other than English at home
Education
94.5%
High School+
23.3%
Bachelor's+
Largest cities in Kansas
Other counties in Kansas
Part of Kansas
Metro areas in Kansas
County rankings
Frequently Asked Questions
Washington County, Kansas has a population of 5,519 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 62nd-largest county in Kansas. Population density is 6 people per square mile.
The population of Washington County has declined 3.7% since 2010 (5,785 → 5,572), a -0.27% annualized rate.
The median household income in Washington County, Kansas is $62,452, with mean (average) household income of $79,440 and per-capita income of $34,654. 5.4% of residents live below the federal poverty level.
In Washington County, the largest racial and ethnic groups are White (92.9%), Hispanic or Latino (0.5%), Black or African American (0.2%). Figures are from the US Census Bureau's 2023 ACS 5-year estimates and reflect self-reported responses.
The median age in Washington County, Kansas is 43.9 years. Residents are 48.2% female and 51.8% male.
The median home value in Washington County is $106,100 and median monthly rent is $547. 78.1% of occupied housing units are owner-occupied. The county has 2,731 total housing units, 13.2% of which are vacant.
The largest employment sector in Washington County, Kansas is professional, scientific, and management services, employing 24.4% of workers. The unemployment rate is 0.9%.
Wichita is among the largest cities associated with Washington County, Kansas, with a population of 396,488.
Washington County, KS Climate
Washington County, KS has an average annual temperature of 11.7°C (53°F) and receives about 785 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
11.7°C
Avg Temp
785
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | -3° / 26° | 15 mm |
| February | 0° / 32° | 19 mm |
| March | 6° / 42° | 56 mm |
| April | 12° / 53° | 67 mm |
| May | 17° / 63° | 112 mm |
| June | 23° / 73° | 117 mm |
| July | 26° / 79° | 93 mm |
| August | 25° / 76° | 97 mm |
| September | 20° / 67° | 94 mm |
| October | 13° / 55° | 56 mm |
| November | 5° / 40° | 35 mm |
| December | -1° / 30° | 24 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Washington County, KS
The most comfortable months to visit Washington County, KS are typically September, June and August, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 33°C high). The coldest is January (near -9°C low). June is usually the wettest month.
Where to stay near Washington County
Visiting or relocating to Washington County, KS? Compare hotels and short-term rentals across the county — live availability and prices.
Top-rated places to stay near Washington County
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Population, race, income, age, and trends across Kansas
Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.